Stockholders’ Equity (Tables)

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Shares and Warrants Reserved for Issuance

In December 2020, the Company's amended and restated certificate of incorporation became effective, which authorizes the issuance of 700,000,000 shares of common stock with a par value of $0.0001 per share. Shares of common stock reserved for issuance, on an as-converted basis, are as follows:

	December 31,	March 31,
	2022	2023
Options issued and outstanding	12,547,010	13,929,917
RSUs outstanding	6,046,796	8,222,931
PRSUs outstanding	687,500	—
Shares available for future issuance under 2020 plan	5,842,057	6,004,507
Shares available for issuance under ESPP	2,543,089	3,043,551
Total	27,666,452	31,200,906

Schedule of Stock Option Activity

The following table summarizes stock option activity for the three months ended March 31, 2023:

	Number of Options	Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Balances at December 31, 2022	12,547,010	$	14.65	6.6	$	77,289
Options granted	2,065,794	15.23
Options exercised	(331,093)	4.64
Options cancelled and forfeited	(351,794)	18.81
Balances at March 31, 2023	13,929,917	14.87		6.8	96,888
Options exercisable – March 31, 2023	8,251,381	6.94		5.1	88,402
Options vested and expected to vest – March 31, 2023	13,881,292	$	14.81	6.8	$	96,844

Schedule of Restricted Stock Units and Restricted Stock

The following table summarizes RSU activity for the three months ended March 31, 2023:

	Number of Shares	Weighted-Average Grant Date Fair Value Per Share
Unvested at December 31, 2022	6,046,796	$	51.28
RSUs granted	3,409,843	17.44
RSUs vested	(698,173)	42.10
RSUs cancelled and forfeited	(535,535)	74.43
Unvested at March 31, 2023	8,222,931	$	36.52

The following table summarizes Restricted Stock activity for the three months ended March 31, 2023:

	Number of Shares	Weighted-Average Grant Date Fair Value Per Share
Unvested at December 31, 2022	10,271	$	123.33
Vested	(5,138)	123.33
Unvested at March 31, 2023	5,133	$	123.33

Schedule of Stock Options Fair Value Assumptions

The following assumptions were used to estimate the fair value of options granted:

	Three Months Ended March 31,
	2022	2023
Expected term (in years)	5.2 – 7.0	5.3 – 7.0
Expected volatility	47.58% – 48.72%	50.96% – 52.89%
Risk-free interest rate	1.70% – 2.16%	3.45% – 3.45%
Dividend yield	—%	—%

Schedule of Employee Stock Purchase Plan Fair Value Assumptions

The following assumptions were used to estimate the fair value of the February 2022 PRSUs granted:

Expected term (in years)	6.9
Expected volatility	48.43%
Risk-free interest rate	1.89%
Dividend yield	0%

The following assumptions were used to estimate the fair value of ESPP purchase rights:

	Three Months Ended March 31,
	2022	2023
Expected term (in years)	0.5	0.5
Expected volatility	91.98%	97.74%
Risk-free interest rate	0.72%	4.97%
Dividend yield	—%	—%

Schedule of Stock-based Compensation Expense

The Company recorded stock-based compensation in the following expense categories in its condensed consolidated statements of operations and comprehensive income (loss) for employees and nonemployees:

	Three Months Ended March 31,
	2022		2023
Sales and marketing	$	2,238	$	3,372
Customer operations	1,619		2,882
Engineering and product development	13,634		56,660
General, administrative, and other	7,559		11,195
Total	$	25,050	$	74,109